Mem Martins, Portugal

Full City Profile

9,000 Population 1,144/sq mi density

548 ft Elevation 167 meters

61°F Avg Temperature 16°C

Mem Martins enjoys a temperate climate with an average annual temperature of 61°F (16°C). Winters average 52°F in January while summers reach 69°F in July. The area gets 285 sunny days per year. Annual precipitation totals 28.0 inches. The area receives 0.0 inches of snow annually.

Temperature

52°F Jan (11°C) 69°F Jul (20°C)

Annual Average	60.5°F
	12% above US avg
January Average	52°F (11°C)
July Average	69°F (20°C)
Sunny Days	285 days/yr

Geography

Elevation	548 ft (167 m)
Area	7.9 sq mi (20.4 km²)
Population Density	1,144/sq mi
Coordinates	38.7944°N, 9.3428°W
Timezone	Europe/Lisbon

Precipitation & Snow

Annual Rainfall 28.0"

26% below US avg

Snowfall 0.0"

Wettest Month (Dec) 4.41"

Driest Month (Jul) 0.31"

Air Quality

Earthquake History

96 earthquakes (M2.5+) within 150 km since 1990. Strongest: M5.0. Most recent: M2.9 on Apr 16, 2025.

Aug 26, 2024	56 km W of Sines, Portugal	M5.0	87 km
Feb 17, 2025	1 km NE of Charneca de Caparica, Portugal	M4.8	23 km
Aug 19, 2016	84 km W of Peniche, Portugal	M4.4	101 km
Aug 17, 2017	5 km N of Arruda dos Vinhos, Portugal	M4.2	35 km
Jan 15, 2018	25 km NNW of Évora, Portugal	M4.1	120 km
Aug 4, 2007	92 km W of Colares, Portugal	M4.0	101 km
Mar 7, 1997	66 km NW of Peniche, Portugal	M3.9	122 km
Jul 31, 1998	23 km W of Estremoz, Portugal	M3.8	129 km
Mar 9, 1990	116 km W of Ericeira, Portugal	M3.8	126 km
Sep 20, 1999	0 km SW of Caxias, Portugal	M3.8	12 km
Sep 4, 1997	24 km WNW of Sines, Portugal	M3.7	83 km
Apr 10, 2001	6 km SSE of Louriçal, Portugal	M3.7	140 km
Mar 28, 2002	43 km W of Sines, Portugal	M3.7	90 km
Apr 30, 1999	7 km WNW of Marinha Grande, Portugal	M3.6	112 km
Feb 1, 2017	4 km WSW of Porto de Mós, Portugal	M3.6	98 km
Jan 6, 2007	36 km SSW of Cascais, Portugal	M3.6	50 km
Jan 19, 1997	9 km WNW of Redondo, Portugal	M3.6	148 km
Feb 18, 1990	2 km ENE of Abrigada, Portugal	M3.6	50 km
Sep 4, 1996	4 km E of Santo Isidoro, Portugal	M3.6	22 km
Jan 11, 2005	12 km WSW of Montemor-o-Novo, Portugal	M3.5	91 km

Source: USGS (M2.5+, 1990–2025)

Tsunami History

1 tsunami recorded within 500 km.

Year	Location	Cause	Max Wave	Deaths	Distance
1531	TAGUS RIVER, LISBON	Earthquake	—	30,000	24 km

Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	52°F (11°C)	3.9 in	Coldest
February	54°F (12°C)	3.3 in
March	56°F (13°C)	2.0 in
April	58°F (14°C)	2.4 in
May	61°F (16°C)	2.2 in
June	65°F (18°C)	0.9 in
July	69°F (20°C)	0.3 in	Driest
August	69°F (21°C)	0.4 in	Warmest
September	68°F (20°C)	1.1 in
October	63°F (17°C)	3.1 in
November	57°F (14°C)	4.1 in
December	54°F (12°C)	4.4 in	Wettest

Mem Martins has a seasonal temperature swing of 17°F / from 52°F in January to 69°F in August. Total annual precipitation is 28.0 inches, with December being the wettest month (4.4") and July the driest (0.3").

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